Жарияланымдар / Публикации

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Дата начала: 2024Тема: search.filters.subject.calcium oxalate druses

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    Study of Morphogenesis and Anatomical Structure of Arctium tomentosum Mill. Native to Kazakhstan
    (Polish Society of Ecological Engineering, 2024-07-01)
    Akmaral Nurmahanova
    ;
    Aigul Аkhmetova
    ;
    Saule Atabayeva
    ;
    Gulbanu Aueskhanovna Sadyrova
    ;
    Assel Childibayeva
    The article presents the biological features of Arctium tomentosum Mill. in natural and sowing conditions, the changes in morpho-anatomical structure of vegetative organs in ontogenesis.The growth rate of the germinal root was quite active, and the formation of many lateral roots was observed at the juvenile stage of life.There was an increase of the neck of the germinal root in the immature state, the formation of primary and secondary lateral roots in length, and an increase in the level of growth of the germinal root in the virginal age state.In the generative state, in the second year of life, the lateral roots form two distinct layers.The seed shell in the natural environment is lamellar, without protein, the seed is well ripened.In the next juvenile state, it was observed that the components of the xylem and phloem were not fully formed in the leaf-like cotyledon, with an underdeveloped mesophyll, of a homogeneous type.The first anatomical features in the root structure have been clarified.The size and shape of mesophyll cells are stable, columnar and loose parenchyma are determined, conductive tissues are formed.The anatomical structure of the root undergoes a period of over-development.In the generative state, the size of the central cylinder increased in the structure of the root, the layer of cutin thickened on the leaves, and the layer of columnar mesophyll containing chlorophyll grains increased.There was an accumulation of idiotic cells and needle-like calcium oxalate druzes in the root.
    Цитирования (OpenAlex) 5Цитирования (OpenCitations) 4
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    Phytochemical Profiling and Toxicological Evaluation of Atraphaxis virgata and Atraphaxis pyrifolia Extracts Using GC–MS and LC–MS
    (Multidisciplinary Digital Publishing Institute, 2026-05-23)
    Meruyert D. Dauletova
    ;
    Almagul K. Umbetova
    ;
    Aisulu Zh. Kabdraisova
    ;
    Ryzvangul S. Ymynova
    ;
    G. Sh. Burasheva
    Atraphaxis virgata and Atraphaxis pyrifolia are xerophytic species of the Polygonaceae family that remain insufficiently characterized from pharmacognostic, phytochemical, and toxicological perspectives. This study provides an integrated evaluation of both species through anatomical authentication, sequential extraction of CO2-extracted residual biomass, GC–MS and LC–MS metabolite profiling, and acute oral toxicity assessment. Anatomical analysis revealed shared xeromorphic traits, including cuticular protection, dorsiventral mesophyll organization, structured vascular bundles, and calcium oxalate druses. It also identified species-specific differences in leaf thickness, mesophyll arrangement, vascular architecture, and druse morphology. GC–MS analysis showed distinct chemical profiles: A. virgata displayed a concentrated profile dominated by acetophenone- and benzofuran-related constituents, whereas A. pyrifolia showed a broader spectrum of carbohydrate-derived, phenolic-related, and oxygenated constituents. LC–MS analysis supported the tentative annotation of diverse polyphenolic classes, including flavonoids, phenolic acids, coumarins, and phenylpropanoid derivatives. Acute oral toxicity testing showed no mortality at doses up to 2000 mg/kg, supporting a low acute oral toxicity classification under the tested conditions. However, histological examination revealed mild to moderate dose-dependent alterations in liver and kidney tissues at higher doses. The novelty of this work lies in linking diagnostic anatomical traits, species-specific metabolite patterns, residual biomass valorization, and preliminary safety evidence within a single comparative framework. These findings provide a basis for pharmacognostic authentication, phytochemical standardization, and future bioactivity-guided evaluation of Atraphaxis species.